利用fastJson、Gson做json以及String的互相转换

fastJson  1、String转换为JSONObject  String param = "{\"age\":\"24\",\"name\":\"cool_summer_moon\"}"; JSONObject  jsonObject = JSONObject.parseObject(param); Object object = jsonObject.get("name"); 2、JSONObject转换为String  String jsonString = jsonObject.toJSONString(); 3、JsonString转换为Object   String jsonString = jsonObject.toJSONString();  Info info = JSON.parseObject(jsonString, Info.class);  4、String 转 Map  String str = "{\"age\":\"24\",\"name\":\"cool_summer_moon\"}"; JSONObject  jsonObject = JSONObject.parseObject(str); //json对象转Map   Map<String,Object> map = (Map<String,Object>)jsonObject; Object object = map.get("age"); 5、Map转String  Map<String,Object> map = new HashMap<>(); map.put("age", 24); map.put("name", "cool_summer_moon"); String jsonString = JSON.toJSONString(map); System.out.println("json字符串是："+jsonString);     运行结果: json字符串是：{"name":"cool_summer_moon","age":24} 6、Map转换为Json  Map<String,Object> map = new HashMap<>(); map.put("age", 24); map.put("name", "cool_summer_moon"); JSONObject json = new JSONObject(map); System.out.println("Json对象是：" + json);     运行结果： Json对象是：{"name":"cool_summer_moon","age":24} 7、获取JSONObject中的JSONObject  String str = "{\"age\":\"24\",\"info\":{\"name\":\"cool_summer_moon\",\"time\":\"201902131331\"}}"; JSONObject  jsonObject = JSONObject.parseObject(str); JSONObject info = jsonObject.getJSONObject("info"); info.get("name").toString(); System.out.println("data==>"+info.toString()); System.out.println("name==>"+ info.get("name").toString());   返回值： data==>{"name":"cool_summer_moon","time":"201902131331"} name==>cool_summer_moon gson：  1、string转换为object  Gson gson = new Gson(); String deployJson = pDeploy.getDeploymentJson(); Deployment deployment = gson.fromJson(deployJson,Deployment.class); 2、object转换为String  Deployment deployment = new Deployment(); Gson gson  = new Gson(); pDeployment.setDeploymentJson(gson.toJson(deployment)); 3、map转换为json  Gson gson = new Gson(); Map map = Maps.newHashMap();   map.put("colour", "red");   map.put("weight", "10kg");   gson.toJson(map);   4、json转换为map  Gson gson = new Gson();   Map map = Maps.newHashMap();   map.put("colour", "red");   map.put("weight", "10kg");   String mapJson =  gson.toJson(map);   map = gson.fromJson(mapJson,Map.class);   jackson  ObjectMapper om = new ObjectMapper(); List<Map<String,Object>> list =  om.readValue(temp, new TypeReference<List<Map<String, Object>>>() {});     /**      * description 生成参数      * @param orderBean      * @return      */     public JSONObject getOrderBody(OrderBean orderBean){         DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");         String timestamp = df.format(LocalDateTime.now()) + "";         TreeMap<String, Object> params = new TreeMap<String, Object>();         params.put("appId", orderBean.getAppId());         params.put("timestamp", timestamp);         params.put("version", orderBean.getVersion());         params.put("serviceCode", orderBean.getServiceCode());         params.put("phoneId", orderBean.getPhoneId());         params.put("orderType", orderBean.getOrderType());         params.put("activityId", orderBean.getActivityId());         params.put("skuId", orderBean.getSkuId());         orderBean.setCustomerOrderId(timestamp+orderBean.getPhoneId());         params.put("customerOrderId", orderBean.getCustomerOrderId());         params.put("effectType", orderBean.getEffectType());         params.put("orderCount", orderBean.getOrderCount());         params.put("notifyUrl", orderBean.getNotifyUrl());         JSONObject attach = new JSONObject();         attach.put("destinationIp", orderBean.getDestinationIP());         attach.put("userIp", orderBean.getPrivateIP());         attach.put("token", orderBean.getQosToken());         params.put("attach", attach.toString());         String sign = "";         try {             sign = HmacUtil.signTopRequest(params, APP_KEY);         } catch (IOException e) {             e.printStackTrace();         }         JSONObject header = new JSONObject();         header.put("appId", orderBean.getAppId());         header.put("serviceCode", orderBean.getServiceCode());         header.put("timestamp", timestamp);         header.put("version", orderBean.getVersion());         header.put("sign", sign);         JSONObject parameter = new JSONObject();         parameter.put("customerOrderId", orderBean.getCustomerOrderId());         parameter.put("phoneId", orderBean.getPhoneId());         parameter.put("notifyUrl", orderBean.getNotifyUrl());         parameter.put("orderType", orderBean.getOrderType());         parameter.put("skuId", orderBean.getSkuId());         parameter.put("activityId", orderBean.getActivityId());         parameter.put("effectType", orderBean.getEffectType());         parameter.put("orderCount", orderBean.getOrderCount());         parameter.put("attach", attach.toString());         JSONObject reqParam = new JSONObject();         reqParam.put("header", header.toString());         reqParam.put("params", parameter.toString());         return  reqParam;     } JSONObject reqParam = accessUtil.getOrderBody(orderBean); // 返回值  String resp = RequestUtil.httpReqForJsonWithPostMethod(AccessConstants.endpoint, reqParam.toString());  JSONObject respObject = JSONObject.fromObject(resp);   if(respObject.containsKey("resCode") && respObject.containsKey("resDesc")){    map.put("resCode",respObject.getString("resCode"));    map.put("resDesc",respObject.getString("resDesc")); }else {    map.putAll(ResultStatesEnum.ORDER_FAILURE.toMap());   }

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